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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-5246 Detail

Description

A vulnerability was determined in Cesanta Mongoose up to 7.20. Affected is the function mg_tls_verify_cert_signature of the file mongoose.c of the component P-384 Public Key Handler. Executing a manipulation can lead to authorization bypass. The attack can be executed remotely. Attacks of this nature are highly complex. The exploitability is told to be difficult. The exploit has been publicly disclosed and may be utilized. Upgrading to version 7.21 is able to address this issue. This patch is called 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulDB
CVSS-BT 6.3 MEDIUM
Vector:  CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/cesanta/mongoose/ VulDB
https://github.com/cesanta/mongoose/commit/0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1 VulDB
https://github.com/cesanta/mongoose/releases/tag/7.21 VulDB
https://vuldb.com/submit/770104 VulDB
https://vuldb.com/vuln/354827 VulDB
https://vuldb.com/vuln/354827/cti VulDB

Weakness Enumeration

CWE-ID CWE Name Source
CWE-285 Improper Authorization VulDB  
CWE-639 Authorization Bypass Through User-Controlled Key VulDB  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-5246
NVD Published Date:
04/02/2026
NVD Last Modified:
04/02/2026
Source:
VulDB